rehype-preset-minify
v7.0.1
Published
rehype preset to minify and mangle HTML
Downloads
40,632
Readme
rehype-preset-minify
rehype preset to minify HTML.
Contents
- What is this?
- When should I use this?
- Install
- Use
- API
- Example
- Syntax
- Syntax tree
- Types
- Compatibility
- Security
- Contribute
- License
What is this?
This package is a unified (rehype) preset to minify HTML.
When should I use this?
You can use this preset when you want to improve the size of HTML documents.
Install
This package is ESM only. In Node.js (version 16+), install with npm:
npm install rehype-preset-minifyIn Deno with esm.sh:
import rehypePresetMinify from 'https://esm.sh/rehype-preset-minify@7'In browsers with esm.sh:
<script type="module">
import rehypePresetMinify from 'https://esm.sh/rehype-preset-minify@7?bundle'
</script>Use
On the API:
import rehypeParse from 'rehype-parse'
import rehypePresetMinify from 'rehype-preset-minify'
import rehypeStringify from 'rehype-stringify'
import {read} from 'to-vfile'
import {unified} from 'unified'
const file = await unified()
.use(rehypeParse)
.use(rehypePresetMinify)
.use(rehypeStringify)
.process(await read('index.html'))
console.log(String(file))On the CLI:
rehype input.html --use rehype-preset-minify --output output.htmlOn the CLI in a config file (here a package.json):
…
"rehype": {
"plugins": [
…
+ "rehype-preset-minify",
…
]
}
…API
This package exports no identifiers.
The default export is rehypePresetMinify.
unified().use(rehypePresetMinify)
Preset to minify HTML
(Preset).
You can reconfigure plugins in presets by using them afterwards with different options.
Example
In
<!doctype html>
<html lang="en-GB">
<head>
<meta charset="utf-8">
<meta http-equiv="content-language" content="en-US">
<script src="index.js" type="text/javascript" language="javascript">
alert(true);
</script>
<link rel="stylesheet" href="index.css" type="text/css">
<title>Foo & bar</title>
</head>
<body>
<h1 class="foo foo">bar bar</h1>
<p id="alfred" id="alfred"> <strong>foo</strong> <em>bar</em> </p>
<button type="BUTTON" onclick="javascript:return false">Alpha</button>
</body>
</html>Out
<!doctypehtml><html lang=en><meta charset=utf8><script src=index.js></script><link href=index.css rel=stylesheet><title>Foo & bar</title><h1 class=foo>bar bar</h1><p id=alfred><strong>foo</strong> <em>bar</em></p><button onclick=return!1 type=button>Alpha</button>Syntax
HTML is parsed according to WHATWG HTML (the living standard), which is also followed by all browsers.
Syntax tree
The syntax tree used is hast.
Types
This package is fully typed with TypeScript.
Compatibility
Projects maintained by the unified collective are compatible with maintained versions of Node.js.
When we cut a new major release, we drop support for unmaintained versions of
Node.
This means we try to keep the current release line,
rehype-preset-minify@^7,
compatible with Node.js 16.
Security
As rehype works on HTML and improper use of HTML can open you up to a
cross-site scripting (XSS) attack, use of rehype can also be unsafe.
Use rehype-sanitize to make the tree safe.
Contribute
See contributing.md in rehypejs/.github for ways
to get started.
See support.md for ways to get help.
This project has a code of conduct. By interacting with this repository, organization, or community you agree to abide by its terms.